14.22: Putting It Together- Invertebrates

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As we’ve seen, invertebrates include a broad scope of animals, from the simplest of animals—the sponges—to the complex arthropods and annelids. As you review the phyla we’ve discussed in this lesson, remember the characteristics that set apart each phyla. Remember: animals are grouped together based on their structure and appearance.

Simple Animals

This video introduces us to the “simplest” of the animals. We differentiate animals by the number of tissue layers they have, and by the complexity of those layers.

A YouTube element has been excluded from this version of the text. You can view it online here: pb.libretexts.org/bionm2/?p=428

Complex Animals

This video continues our exploration of invertebrates. We discuss the more complex annelids and arthropods.

A YouTube element has been excluded from this version of the text. You can view it online here: pb.libretexts.org/bionm2/?p=428

Contributors and Attributions

Putting It Together: Invertebrates. Authored by: Shelli Carter and Lumen Learning. Provided by: Lumen Learning. License: CC BY: Attribution

Simple Animals: Sponges, Jellies, & Octopuses - Crash Course Biology #22. Authored by: CrashCourse. Located at: https://youtu.be/tIfsHPpkSPs. License: All Rights Reserved. License Terms: Standard YouTube license
Complex Animals: Annelids & Arthropods - CrashCourse Biology #23. Authored by: CrashCourse. Located at: https://youtu.be/YQb7Xq0enTI. License: All Rights Reserved. License Terms: Standard YouTube license